LM2611BMFX

Voltage Regulators - DC DC Switching Regulators Overview

The LM2611BMFX/NOPB is a monolithic switching regulator from Texas Instruments, integrating a high-current switch and control circuitry for Cuk converter topologies. It operates within an input voltage range of 2.7 V to 14 V, delivering up to 1.2 A output current. The device supports adjustable negative output voltages ranging from -36 V to -1.23 V. It features a fixed switching frequency of 1.4 MHz and includes internal compensation. The component functions reliably across an extended temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-current power switch and control logic for compact design
• Supports Cuk topology for inverting or step-down voltage conversion
• Includes internal frequency compensation to minimize external components
• Features thermal shutdown protection for operational safety

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered equipment requiring negative supply rails
• Industrial systems needing isolated or inverted power sources
• Telecommunications infrastructure with wide input voltage ranges
• Automotive electronics operating under harsh environmental conditions

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number suffix, specifically /NOPB, to confirm lead-free compliance and specific tape-and-reel packaging options. Confirm the package variant (e.g., BMF vs. BMFX) matches the required footprint dimensions. Ensure the ordering code aligns with the desired factory pack quantity. Cross-reference the manufacturer datasheet revision to validate pinout configurations before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a single-inductor solution for inverting or buck-boost applications is required. The 1.4 MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Verify that the load current requirements do not exceed the 1.2 A limit. Consider the thermal performance in the SOT-23-5 package for high-duty cycle operations. Ensure input voltage stays within the specified 2.7 V to 14 V window.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2611 family of switching regulators designed for space-constrained applications. It consolidates the power switch, oscillator, and error amplifier into a single small outline package. The family targets applications requiring efficient voltage conversion without the complexity of discrete controller designs. It serves as a direct replacement for older generation controllers in compact power modules.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for LM2611AMFX/NOPB for potential grade variations. Verify compatibility with LM2611BMF/NOPB if different packaging quantities are needed. Ensure substitute parts maintain the same SOT-23-5 footprint and pinout configuration. Confirm that alternative devices support the required 1.4 MHz switching frequency and 1.2 A current capability.